Most listings are in the $20's per square foot per year. The Richardson region is going through a decline in rates. In the last 3 months, the median rate decreased $0 per sqft per year. That's a 0% decrease in rent.
Compared to the rest of the DFW Metroplex market, the Richardson region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 69 listings have been listed, so you'll want to check back regularly for new listings. About 9% of the available space in the Richardson are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 2,760 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this area are close to 2 stories. Most buildings in this region were built in 1985 and are Class B.